package com.itheima.reggie_1.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.itheima.reggie_1.common.R;
import com.itheima.reggie_1.entity.User;
import com.itheima.reggie_1.service.UserService;
import com.itheima.reggie_1.utils.SMSUtils;
import com.itheima.reggie_1.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachePut;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private RedisTemplate redisTemplate;
    @Autowired
    private CacheManager cacheManager;

    /**
     * 发送手机短信验证码
     * @param user
     * @return
//     * CachePut: 讲方法返回值放入缓存
//     * value: 缓存的名称,每个缓存名称下面可以有多个key
//     * key: 缓存的key
     */
//    @CachePut(value = "userCache",key = "#user.id")
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession session) {
//        获取手机号
        String phone = user.getPhone();
        if (StringUtils.isNotEmpty(phone)) {
//        生成随机的4位验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info("code={}",code);
//        调用阿里云提供的短信服务API完成发送短信
//            SMSUtils.sendMessage("瑞吉外卖","",phone,code);
//        需要将生成的验证码保存到Session
//            session.setAttribute(phone,code);
//            将生成的验证码缓存到Session中,并且设置有效期为5分钟
            redisTemplate.opsForValue().set(phone,code,5, TimeUnit.MINUTES);
            return R.success("手机验证码短信发送成功");
        }
        return R.error("短信发送失败");
    }
    /**
     * 移动端用户登录
     * @param map
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session) {
        log.info(map.toString());
//        获取手机号
        String phone = map.get("phone").toString();
//        获取验证码
        String code = map.get("code").toString();
//        从Session中获取保存的验证码
//        Object codeInSession = session.getAttribute(phone);
//        从Redis中获取缓存的验证码
        Object codeInSession = redisTemplate.opsForValue().get(phone);
//        进行验证码的比对(页面提交的验证码和Session中保存的验证码比对)
        if (codeInSession != null && codeInSession.equals(code)) {
//        如果能够比对成功,说明登陆成功
            LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(User::getPhone,phone);
            User user = userService.getOne(queryWrapper);
            if (user == null) {
//              判断当前手机号对应的用户是否为新用户,如果是新用户就自动完成注册
                user = new User();
                user.setPhone(phone);
                user.setStatus(1);
                userService.save(user);
            }
            session.setAttribute("user",user.getId());
//            如果用户登录成功,删除Redis中缓存的验证码
            redisTemplate.delete(phone);
            return R.success(user);
        }
        return R.error("登录失败");
    }
}
